feat: Convert `__GIT_WORKING_DIR__` to a global scope

[yermulnik]

A follow-up to #943 (see suggestion at this thread).

TL;DR: Move __GIT_WORKING_DIR__ permutation feature over right into common::parse_cmdline function so that it is available to all hooks that utilize common::parse_cmdline func

  # Support for setting PATH to repo root.
  for i in "${!ARGS[@]}"; do
    ARGS[i]=${ARGS[i]/__GIT_WORKING_DIR__/$(pwd)\/}
  done

Once moved, these hooks need to be updated by removing the for loop for __GIT_WORKING_DIR__ permutation (+ also update README to provide more clear info):

hooks/terraform_tflint.sh:18:    ARGS[i]=${ARGS[i]/__GIT_WORKING_DIR__/$(pwd)\/}
hooks/terraform_trivy.sh:17:    ARGS[i]=${ARGS[i]/__GIT_WORKING_DIR__/$(pwd)\/}
hooks/terraform_checkov.sh:17:    ARGS[i]=${ARGS[i]/__GIT_WORKING_DIR__/$(pwd)\/}
hooks/terraform_tfsec.sh:17:    ARGS[i]=${ARGS[i]/__GIT_WORKING_DIR__/$(pwd)\/}

[antonbabenko]

This issue has been resolved in version 1.103.0 🎉